B
bigd
Dear All,
I am trying to calculate diversity for an installation. The DB has a 60A main fuse. TT system. Small 2 bedroom cottage. Unable to get converted to TNS
At the present time I have the following circuits
Up ring 32A MCB (2 Bedrooms)
Down ring 32A MCB (Small lounge & dining room)
Up lights 6A MCB (4 x 60W bulbs)
Down lights 6A MCB (4 x 60W Bulbs)
Immersion 16A dedicated circuit (13A fused spur/switch) 2.4kW
Air source pump 40A (nominal 15A but has potential of high start current if temp below 0 deg C)
Airsource control 6A dedicated circuit
Adding all this up, even with diversity, is well in excess of the 60A main fuse. Is there anything I can do to reduce the diversity of this installation?
It may be worth noting the following:
1. That the immersion is a back up if the air source heater fails
2. Both ring circuits will be subject to very light loads
Cheers Dave
I am trying to calculate diversity for an installation. The DB has a 60A main fuse. TT system. Small 2 bedroom cottage. Unable to get converted to TNS
At the present time I have the following circuits
Up ring 32A MCB (2 Bedrooms)
Down ring 32A MCB (Small lounge & dining room)
Up lights 6A MCB (4 x 60W bulbs)
Down lights 6A MCB (4 x 60W Bulbs)
Immersion 16A dedicated circuit (13A fused spur/switch) 2.4kW
Air source pump 40A (nominal 15A but has potential of high start current if temp below 0 deg C)
Airsource control 6A dedicated circuit
Adding all this up, even with diversity, is well in excess of the 60A main fuse. Is there anything I can do to reduce the diversity of this installation?
It may be worth noting the following:
1. That the immersion is a back up if the air source heater fails
2. Both ring circuits will be subject to very light loads
Cheers Dave